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663996b3 MS |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
663996b3 | 20 | #include <errno.h> |
663996b3 | 21 | |
60f067b4 JS |
22 | #include "sd-id128.h" |
23 | #include "sd-messages.h" | |
db2df898 MP |
24 | |
25 | #include "alloc-util.h" | |
14228c0d | 26 | #include "async.h" |
db2df898 | 27 | #include "dbus-job.h" |
60f067b4 | 28 | #include "dbus.h" |
db2df898 MP |
29 | #include "escape.h" |
30 | #include "job.h" | |
31 | #include "log.h" | |
32 | #include "macro.h" | |
33 | #include "parse-util.h" | |
34 | #include "set.h" | |
35 | #include "special.h" | |
4c89c718 | 36 | #include "stdio-util.h" |
db2df898 MP |
37 | #include "string-table.h" |
38 | #include "string-util.h" | |
39 | #include "strv.h" | |
e3bff60a | 40 | #include "terminal-util.h" |
db2df898 MP |
41 | #include "unit.h" |
42 | #include "virt.h" | |
663996b3 MS |
43 | |
44 | Job* job_new_raw(Unit *unit) { | |
45 | Job *j; | |
46 | ||
47 | /* used for deserialization */ | |
48 | ||
49 | assert(unit); | |
50 | ||
51 | j = new0(Job, 1); | |
52 | if (!j) | |
53 | return NULL; | |
54 | ||
55 | j->manager = unit->manager; | |
56 | j->unit = unit; | |
57 | j->type = _JOB_TYPE_INVALID; | |
663996b3 MS |
58 | |
59 | return j; | |
60 | } | |
61 | ||
62 | Job* job_new(Unit *unit, JobType type) { | |
63 | Job *j; | |
64 | ||
65 | assert(type < _JOB_TYPE_MAX); | |
66 | ||
67 | j = job_new_raw(unit); | |
68 | if (!j) | |
69 | return NULL; | |
70 | ||
71 | j->id = j->manager->current_job_id++; | |
72 | j->type = type; | |
73 | ||
74 | /* We don't link it here, that's what job_dependency() is for */ | |
75 | ||
76 | return j; | |
77 | } | |
78 | ||
79 | void job_free(Job *j) { | |
663996b3 MS |
80 | assert(j); |
81 | assert(!j->installed); | |
82 | assert(!j->transaction_prev); | |
83 | assert(!j->transaction_next); | |
84 | assert(!j->subject_list); | |
85 | assert(!j->object_list); | |
86 | ||
87 | if (j->in_run_queue) | |
60f067b4 | 88 | LIST_REMOVE(run_queue, j->manager->run_queue, j); |
663996b3 MS |
89 | |
90 | if (j->in_dbus_queue) | |
60f067b4 | 91 | LIST_REMOVE(dbus_queue, j->manager->dbus_job_queue, j); |
663996b3 | 92 | |
60f067b4 | 93 | sd_event_source_unref(j->timer_event_source); |
663996b3 | 94 | |
5eef597e MP |
95 | sd_bus_track_unref(j->clients); |
96 | strv_free(j->deserialized_clients); | |
663996b3 | 97 | |
663996b3 MS |
98 | free(j); |
99 | } | |
100 | ||
e735f4d4 MP |
101 | static void job_set_state(Job *j, JobState state) { |
102 | assert(j); | |
103 | assert(state >= 0); | |
104 | assert(state < _JOB_STATE_MAX); | |
105 | ||
106 | if (j->state == state) | |
107 | return; | |
108 | ||
109 | j->state = state; | |
110 | ||
111 | if (!j->installed) | |
112 | return; | |
113 | ||
114 | if (j->state == JOB_RUNNING) | |
115 | j->unit->manager->n_running_jobs++; | |
116 | else { | |
117 | assert(j->state == JOB_WAITING); | |
118 | assert(j->unit->manager->n_running_jobs > 0); | |
119 | ||
120 | j->unit->manager->n_running_jobs--; | |
121 | ||
122 | if (j->unit->manager->n_running_jobs <= 0) | |
123 | j->unit->manager->jobs_in_progress_event_source = sd_event_source_unref(j->unit->manager->jobs_in_progress_event_source); | |
124 | } | |
125 | } | |
126 | ||
663996b3 MS |
127 | void job_uninstall(Job *j) { |
128 | Job **pj; | |
129 | ||
130 | assert(j->installed); | |
131 | ||
e735f4d4 MP |
132 | job_set_state(j, JOB_WAITING); |
133 | ||
663996b3 MS |
134 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; |
135 | assert(*pj == j); | |
136 | ||
137 | /* Detach from next 'bigger' objects */ | |
138 | ||
139 | /* daemon-reload should be transparent to job observers */ | |
140 | if (j->manager->n_reloading <= 0) | |
141 | bus_job_send_removed_signal(j); | |
142 | ||
143 | *pj = NULL; | |
144 | ||
145 | unit_add_to_gc_queue(j->unit); | |
146 | ||
147 | hashmap_remove(j->manager->jobs, UINT32_TO_PTR(j->id)); | |
148 | j->installed = false; | |
149 | } | |
150 | ||
151 | static bool job_type_allows_late_merge(JobType t) { | |
152 | /* Tells whether it is OK to merge a job of type 't' with an already | |
153 | * running job. | |
154 | * Reloads cannot be merged this way. Think of the sequence: | |
155 | * 1. Reload of a daemon is in progress; the daemon has already loaded | |
156 | * its config file, but hasn't completed the reload operation yet. | |
157 | * 2. Edit foo's config file. | |
158 | * 3. Trigger another reload to have the daemon use the new config. | |
159 | * Should the second reload job be merged into the first one, the daemon | |
160 | * would not know about the new config. | |
161 | * JOB_RESTART jobs on the other hand can be merged, because they get | |
162 | * patched into JOB_START after stopping the unit. So if we see a | |
163 | * JOB_RESTART running, it means the unit hasn't stopped yet and at | |
164 | * this time the merge is still allowed. */ | |
165 | return t != JOB_RELOAD; | |
166 | } | |
167 | ||
168 | static void job_merge_into_installed(Job *j, Job *other) { | |
169 | assert(j->installed); | |
170 | assert(j->unit == other->unit); | |
171 | ||
172 | if (j->type != JOB_NOP) | |
173 | job_type_merge_and_collapse(&j->type, other->type, j->unit); | |
174 | else | |
175 | assert(other->type == JOB_NOP); | |
176 | ||
663996b3 MS |
177 | j->irreversible = j->irreversible || other->irreversible; |
178 | j->ignore_order = j->ignore_order || other->ignore_order; | |
179 | } | |
180 | ||
181 | Job* job_install(Job *j) { | |
182 | Job **pj; | |
183 | Job *uj; | |
184 | ||
185 | assert(!j->installed); | |
186 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); | |
e735f4d4 | 187 | assert(j->state == JOB_WAITING); |
663996b3 MS |
188 | |
189 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; | |
190 | uj = *pj; | |
191 | ||
192 | if (uj) { | |
f47781d8 | 193 | if (job_type_is_conflicting(uj->type, j->type)) |
663996b3 MS |
194 | job_finish_and_invalidate(uj, JOB_CANCELED, false); |
195 | else { | |
196 | /* not conflicting, i.e. mergeable */ | |
197 | ||
f47781d8 | 198 | if (uj->state == JOB_WAITING || |
663996b3 MS |
199 | (job_type_allows_late_merge(j->type) && job_type_is_superset(uj->type, j->type))) { |
200 | job_merge_into_installed(uj, j); | |
e3bff60a | 201 | log_unit_debug(uj->unit, |
663996b3 MS |
202 | "Merged into installed job %s/%s as %u", |
203 | uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id); | |
204 | return uj; | |
205 | } else { | |
206 | /* already running and not safe to merge into */ | |
207 | /* Patch uj to become a merged job and re-run it. */ | |
208 | /* XXX It should be safer to queue j to run after uj finishes, but it is | |
209 | * not currently possible to have more than one installed job per unit. */ | |
210 | job_merge_into_installed(uj, j); | |
e3bff60a | 211 | log_unit_debug(uj->unit, |
663996b3 MS |
212 | "Merged into running job, re-running: %s/%s as %u", |
213 | uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id); | |
e735f4d4 MP |
214 | |
215 | job_set_state(uj, JOB_WAITING); | |
663996b3 MS |
216 | return uj; |
217 | } | |
218 | } | |
219 | } | |
220 | ||
221 | /* Install the job */ | |
222 | *pj = j; | |
223 | j->installed = true; | |
e735f4d4 | 224 | |
663996b3 | 225 | j->manager->n_installed_jobs ++; |
e3bff60a | 226 | log_unit_debug(j->unit, |
663996b3 MS |
227 | "Installed new job %s/%s as %u", |
228 | j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
229 | return j; | |
230 | } | |
231 | ||
232 | int job_install_deserialized(Job *j) { | |
233 | Job **pj; | |
234 | ||
235 | assert(!j->installed); | |
236 | ||
237 | if (j->type < 0 || j->type >= _JOB_TYPE_MAX_IN_TRANSACTION) { | |
238 | log_debug("Invalid job type %s in deserialization.", strna(job_type_to_string(j->type))); | |
239 | return -EINVAL; | |
240 | } | |
241 | ||
242 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; | |
663996b3 | 243 | if (*pj) { |
e3bff60a | 244 | log_unit_debug(j->unit, "Unit already has a job installed. Not installing deserialized job."); |
663996b3 MS |
245 | return -EEXIST; |
246 | } | |
e735f4d4 | 247 | |
663996b3 MS |
248 | *pj = j; |
249 | j->installed = true; | |
e735f4d4 MP |
250 | |
251 | if (j->state == JOB_RUNNING) | |
252 | j->unit->manager->n_running_jobs++; | |
253 | ||
e3bff60a | 254 | log_unit_debug(j->unit, |
663996b3 MS |
255 | "Reinstalled deserialized job %s/%s as %u", |
256 | j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
257 | return 0; | |
258 | } | |
259 | ||
260 | JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) { | |
261 | JobDependency *l; | |
262 | ||
263 | assert(object); | |
264 | ||
265 | /* Adds a new job link, which encodes that the 'subject' job | |
266 | * needs the 'object' job in some way. If 'subject' is NULL | |
267 | * this means the 'anchor' job (i.e. the one the user | |
268 | * explicitly asked for) is the requester. */ | |
269 | ||
270 | if (!(l = new0(JobDependency, 1))) | |
271 | return NULL; | |
272 | ||
273 | l->subject = subject; | |
274 | l->object = object; | |
275 | l->matters = matters; | |
276 | l->conflicts = conflicts; | |
277 | ||
278 | if (subject) | |
60f067b4 | 279 | LIST_PREPEND(subject, subject->subject_list, l); |
663996b3 | 280 | |
60f067b4 | 281 | LIST_PREPEND(object, object->object_list, l); |
663996b3 MS |
282 | |
283 | return l; | |
284 | } | |
285 | ||
286 | void job_dependency_free(JobDependency *l) { | |
287 | assert(l); | |
288 | ||
289 | if (l->subject) | |
60f067b4 | 290 | LIST_REMOVE(subject, l->subject->subject_list, l); |
663996b3 | 291 | |
60f067b4 | 292 | LIST_REMOVE(object, l->object->object_list, l); |
663996b3 MS |
293 | |
294 | free(l); | |
295 | } | |
296 | ||
297 | void job_dump(Job *j, FILE*f, const char *prefix) { | |
298 | assert(j); | |
299 | assert(f); | |
300 | ||
301 | if (!prefix) | |
302 | prefix = ""; | |
303 | ||
304 | fprintf(f, | |
305 | "%s-> Job %u:\n" | |
306 | "%s\tAction: %s -> %s\n" | |
307 | "%s\tState: %s\n" | |
663996b3 MS |
308 | "%s\tIrreversible: %s\n", |
309 | prefix, j->id, | |
310 | prefix, j->unit->id, job_type_to_string(j->type), | |
311 | prefix, job_state_to_string(j->state), | |
663996b3 MS |
312 | prefix, yes_no(j->irreversible)); |
313 | } | |
314 | ||
315 | /* | |
316 | * Merging is commutative, so imagine the matrix as symmetric. We store only | |
317 | * its lower triangle to avoid duplication. We don't store the main diagonal, | |
318 | * because A merged with A is simply A. | |
319 | * | |
320 | * If the resulting type is collapsed immediately afterwards (to get rid of | |
321 | * the JOB_RELOAD_OR_START, which lies outside the lookup function's domain), | |
322 | * the following properties hold: | |
323 | * | |
e3bff60a MP |
324 | * Merging is associative! A merged with B, and then merged with C is the same |
325 | * as A merged with the result of B merged with C. | |
663996b3 MS |
326 | * |
327 | * Mergeability is transitive! If A can be merged with B and B with C then | |
328 | * A also with C. | |
329 | * | |
330 | * Also, if A merged with B cannot be merged with C, then either A or B cannot | |
331 | * be merged with C either. | |
332 | */ | |
333 | static const JobType job_merging_table[] = { | |
334 | /* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD */ | |
335 | /*********************************************************************************/ | |
336 | /*JOB_START */ | |
337 | /*JOB_VERIFY_ACTIVE */ JOB_START, | |
338 | /*JOB_STOP */ -1, -1, | |
339 | /*JOB_RELOAD */ JOB_RELOAD_OR_START, JOB_RELOAD, -1, | |
340 | /*JOB_RESTART */ JOB_RESTART, JOB_RESTART, -1, JOB_RESTART, | |
341 | }; | |
342 | ||
343 | JobType job_type_lookup_merge(JobType a, JobType b) { | |
344 | assert_cc(ELEMENTSOF(job_merging_table) == _JOB_TYPE_MAX_MERGING * (_JOB_TYPE_MAX_MERGING - 1) / 2); | |
345 | assert(a >= 0 && a < _JOB_TYPE_MAX_MERGING); | |
346 | assert(b >= 0 && b < _JOB_TYPE_MAX_MERGING); | |
347 | ||
348 | if (a == b) | |
349 | return a; | |
350 | ||
351 | if (a < b) { | |
352 | JobType tmp = a; | |
353 | a = b; | |
354 | b = tmp; | |
355 | } | |
356 | ||
357 | return job_merging_table[(a - 1) * a / 2 + b]; | |
358 | } | |
359 | ||
360 | bool job_type_is_redundant(JobType a, UnitActiveState b) { | |
361 | switch (a) { | |
362 | ||
363 | case JOB_START: | |
364 | return | |
365 | b == UNIT_ACTIVE || | |
366 | b == UNIT_RELOADING; | |
367 | ||
368 | case JOB_STOP: | |
369 | return | |
370 | b == UNIT_INACTIVE || | |
371 | b == UNIT_FAILED; | |
372 | ||
373 | case JOB_VERIFY_ACTIVE: | |
374 | return | |
375 | b == UNIT_ACTIVE || | |
376 | b == UNIT_RELOADING; | |
377 | ||
378 | case JOB_RELOAD: | |
379 | return | |
380 | b == UNIT_RELOADING; | |
381 | ||
382 | case JOB_RESTART: | |
383 | return | |
384 | b == UNIT_ACTIVATING; | |
385 | ||
f47781d8 MP |
386 | case JOB_NOP: |
387 | return true; | |
388 | ||
663996b3 MS |
389 | default: |
390 | assert_not_reached("Invalid job type"); | |
391 | } | |
392 | } | |
393 | ||
e3bff60a | 394 | JobType job_type_collapse(JobType t, Unit *u) { |
663996b3 MS |
395 | UnitActiveState s; |
396 | ||
e3bff60a | 397 | switch (t) { |
663996b3 MS |
398 | |
399 | case JOB_TRY_RESTART: | |
400 | s = unit_active_state(u); | |
401 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s)) | |
e3bff60a MP |
402 | return JOB_NOP; |
403 | ||
404 | return JOB_RESTART; | |
663996b3 | 405 | |
4c89c718 MP |
406 | case JOB_TRY_RELOAD: |
407 | s = unit_active_state(u); | |
408 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s)) | |
409 | return JOB_NOP; | |
410 | ||
411 | return JOB_RELOAD; | |
412 | ||
663996b3 MS |
413 | case JOB_RELOAD_OR_START: |
414 | s = unit_active_state(u); | |
415 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s)) | |
e3bff60a MP |
416 | return JOB_START; |
417 | ||
418 | return JOB_RELOAD; | |
663996b3 MS |
419 | |
420 | default: | |
e3bff60a | 421 | return t; |
663996b3 MS |
422 | } |
423 | } | |
424 | ||
425 | int job_type_merge_and_collapse(JobType *a, JobType b, Unit *u) { | |
e3bff60a MP |
426 | JobType t; |
427 | ||
428 | t = job_type_lookup_merge(*a, b); | |
663996b3 MS |
429 | if (t < 0) |
430 | return -EEXIST; | |
e3bff60a MP |
431 | |
432 | *a = job_type_collapse(t, u); | |
663996b3 MS |
433 | return 0; |
434 | } | |
435 | ||
60f067b4 | 436 | static bool job_is_runnable(Job *j) { |
663996b3 MS |
437 | Iterator i; |
438 | Unit *other; | |
439 | ||
440 | assert(j); | |
441 | assert(j->installed); | |
442 | ||
443 | /* Checks whether there is any job running for the units this | |
444 | * job needs to be running after (in the case of a 'positive' | |
445 | * job type) or before (in the case of a 'negative' job | |
446 | * type. */ | |
447 | ||
60f067b4 JS |
448 | /* Note that unit types have a say in what is runnable, |
449 | * too. For example, if they return -EAGAIN from | |
450 | * unit_start() they can indicate they are not | |
451 | * runnable yet. */ | |
452 | ||
663996b3 MS |
453 | /* First check if there is an override */ |
454 | if (j->ignore_order) | |
455 | return true; | |
456 | ||
457 | if (j->type == JOB_NOP) | |
458 | return true; | |
459 | ||
460 | if (j->type == JOB_START || | |
461 | j->type == JOB_VERIFY_ACTIVE || | |
462 | j->type == JOB_RELOAD) { | |
463 | ||
464 | /* Immediate result is that the job is or might be | |
fb183854 | 465 | * started. In this case let's wait for the |
663996b3 MS |
466 | * dependencies, regardless whether they are |
467 | * starting or stopping something. */ | |
468 | ||
469 | SET_FOREACH(other, j->unit->dependencies[UNIT_AFTER], i) | |
470 | if (other->job) | |
471 | return false; | |
472 | } | |
473 | ||
474 | /* Also, if something else is being stopped and we should | |
fb183854 | 475 | * change state after it, then let's wait. */ |
663996b3 MS |
476 | |
477 | SET_FOREACH(other, j->unit->dependencies[UNIT_BEFORE], i) | |
478 | if (other->job && | |
479 | (other->job->type == JOB_STOP || | |
480 | other->job->type == JOB_RESTART)) | |
481 | return false; | |
482 | ||
483 | /* This means that for a service a and a service b where b | |
484 | * shall be started after a: | |
485 | * | |
486 | * start a + start b → 1st step start a, 2nd step start b | |
487 | * start a + stop b → 1st step stop b, 2nd step start a | |
488 | * stop a + start b → 1st step stop a, 2nd step start b | |
489 | * stop a + stop b → 1st step stop b, 2nd step stop a | |
490 | * | |
491 | * This has the side effect that restarts are properly | |
492 | * synchronized too. */ | |
493 | ||
494 | return true; | |
495 | } | |
496 | ||
497 | static void job_change_type(Job *j, JobType newtype) { | |
e3bff60a MP |
498 | assert(j); |
499 | ||
500 | log_unit_debug(j->unit, | |
663996b3 MS |
501 | "Converting job %s/%s -> %s/%s", |
502 | j->unit->id, job_type_to_string(j->type), | |
503 | j->unit->id, job_type_to_string(newtype)); | |
504 | ||
505 | j->type = newtype; | |
506 | } | |
507 | ||
7035cd9e | 508 | static int job_perform_on_unit(Job **j) { |
db2df898 MP |
509 | uint32_t id; |
510 | Manager *m; | |
511 | JobType t; | |
512 | Unit *u; | |
7035cd9e MP |
513 | int r; |
514 | ||
db2df898 MP |
515 | /* While we execute this operation the job might go away (for |
516 | * example: because it finishes immediately or is replaced by | |
517 | * a new, conflicting job.) To make sure we don't access a | |
518 | * freed job later on we store the id here, so that we can | |
519 | * verify the job is still valid. */ | |
520 | ||
521 | assert(j); | |
522 | assert(*j); | |
523 | ||
524 | m = (*j)->manager; | |
525 | u = (*j)->unit; | |
526 | t = (*j)->type; | |
527 | id = (*j)->id; | |
528 | ||
7035cd9e MP |
529 | switch (t) { |
530 | case JOB_START: | |
531 | r = unit_start(u); | |
532 | break; | |
533 | ||
534 | case JOB_RESTART: | |
535 | t = JOB_STOP; | |
db2df898 | 536 | /* fall through */ |
7035cd9e MP |
537 | case JOB_STOP: |
538 | r = unit_stop(u); | |
539 | break; | |
540 | ||
541 | case JOB_RELOAD: | |
542 | r = unit_reload(u); | |
543 | break; | |
544 | ||
545 | default: | |
546 | assert_not_reached("Invalid job type"); | |
547 | } | |
548 | ||
549 | /* Log if the job still exists and the start/stop/reload function | |
550 | * actually did something. */ | |
551 | *j = manager_get_job(m, id); | |
552 | if (*j && r > 0) | |
553 | unit_status_emit_starting_stopping_reloading(u, t); | |
554 | ||
555 | return r; | |
556 | } | |
557 | ||
663996b3 MS |
558 | int job_run_and_invalidate(Job *j) { |
559 | int r; | |
663996b3 MS |
560 | |
561 | assert(j); | |
562 | assert(j->installed); | |
563 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); | |
564 | assert(j->in_run_queue); | |
565 | ||
60f067b4 | 566 | LIST_REMOVE(run_queue, j->manager->run_queue, j); |
663996b3 MS |
567 | j->in_run_queue = false; |
568 | ||
569 | if (j->state != JOB_WAITING) | |
570 | return 0; | |
571 | ||
572 | if (!job_is_runnable(j)) | |
573 | return -EAGAIN; | |
574 | ||
e735f4d4 | 575 | job_set_state(j, JOB_RUNNING); |
663996b3 MS |
576 | job_add_to_dbus_queue(j); |
577 | ||
663996b3 MS |
578 | |
579 | switch (j->type) { | |
580 | ||
663996b3 MS |
581 | case JOB_VERIFY_ACTIVE: { |
582 | UnitActiveState t = unit_active_state(j->unit); | |
583 | if (UNIT_IS_ACTIVE_OR_RELOADING(t)) | |
584 | r = -EALREADY; | |
585 | else if (t == UNIT_ACTIVATING) | |
586 | r = -EAGAIN; | |
587 | else | |
60f067b4 | 588 | r = -EBADR; |
663996b3 MS |
589 | break; |
590 | } | |
591 | ||
7035cd9e | 592 | case JOB_START: |
663996b3 MS |
593 | case JOB_STOP: |
594 | case JOB_RESTART: | |
7035cd9e | 595 | r = job_perform_on_unit(&j); |
663996b3 | 596 | |
7035cd9e MP |
597 | /* If the unit type does not support starting/stopping, |
598 | * then simply wait. */ | |
663996b3 MS |
599 | if (r == -EBADR) |
600 | r = 0; | |
601 | break; | |
602 | ||
603 | case JOB_RELOAD: | |
7035cd9e | 604 | r = job_perform_on_unit(&j); |
663996b3 MS |
605 | break; |
606 | ||
607 | case JOB_NOP: | |
608 | r = -EALREADY; | |
609 | break; | |
610 | ||
611 | default: | |
612 | assert_not_reached("Unknown job type"); | |
613 | } | |
614 | ||
663996b3 MS |
615 | if (j) { |
616 | if (r == -EALREADY) | |
617 | r = job_finish_and_invalidate(j, JOB_DONE, true); | |
60f067b4 | 618 | else if (r == -EBADR) |
663996b3 | 619 | r = job_finish_and_invalidate(j, JOB_SKIPPED, true); |
60f067b4 JS |
620 | else if (r == -ENOEXEC) |
621 | r = job_finish_and_invalidate(j, JOB_INVALID, true); | |
f47781d8 MP |
622 | else if (r == -EPROTO) |
623 | r = job_finish_and_invalidate(j, JOB_ASSERT, true); | |
e3bff60a | 624 | else if (r == -EOPNOTSUPP) |
e735f4d4 MP |
625 | r = job_finish_and_invalidate(j, JOB_UNSUPPORTED, true); |
626 | else if (r == -EAGAIN) | |
627 | job_set_state(j, JOB_WAITING); | |
628 | else if (r < 0) | |
663996b3 MS |
629 | r = job_finish_and_invalidate(j, JOB_FAILED, true); |
630 | } | |
631 | ||
632 | return r; | |
633 | } | |
634 | ||
635 | _pure_ static const char *job_get_status_message_format(Unit *u, JobType t, JobResult result) { | |
db2df898 | 636 | |
7035cd9e MP |
637 | static const char *const generic_finished_start_job[_JOB_RESULT_MAX] = { |
638 | [JOB_DONE] = "Started %s.", | |
639 | [JOB_TIMEOUT] = "Timed out starting %s.", | |
640 | [JOB_FAILED] = "Failed to start %s.", | |
641 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
642 | [JOB_ASSERT] = "Assertion failed for %s.", | |
643 | [JOB_UNSUPPORTED] = "Starting of %s not supported.", | |
644 | }; | |
645 | static const char *const generic_finished_stop_job[_JOB_RESULT_MAX] = { | |
646 | [JOB_DONE] = "Stopped %s.", | |
647 | [JOB_FAILED] = "Stopped (with error) %s.", | |
648 | [JOB_TIMEOUT] = "Timed out stoppping %s.", | |
649 | }; | |
650 | static const char *const generic_finished_reload_job[_JOB_RESULT_MAX] = { | |
651 | [JOB_DONE] = "Reloaded %s.", | |
652 | [JOB_FAILED] = "Reload failed for %s.", | |
653 | [JOB_TIMEOUT] = "Timed out reloading %s.", | |
654 | }; | |
655 | /* When verify-active detects the unit is inactive, report it. | |
656 | * Most likely a DEPEND warning from a requisiting unit will | |
657 | * occur next and it's nice to see what was requisited. */ | |
658 | static const char *const generic_finished_verify_active_job[_JOB_RESULT_MAX] = { | |
659 | [JOB_SKIPPED] = "%s is not active.", | |
660 | }; | |
663996b3 | 661 | |
db2df898 MP |
662 | const UnitStatusMessageFormats *format_table; |
663 | const char *format; | |
664 | ||
663996b3 MS |
665 | assert(u); |
666 | assert(t >= 0); | |
667 | assert(t < _JOB_TYPE_MAX); | |
668 | ||
db2df898 | 669 | if (IN_SET(t, JOB_START, JOB_STOP, JOB_RESTART)) { |
7035cd9e MP |
670 | format_table = &UNIT_VTABLE(u)->status_message_formats; |
671 | if (format_table) { | |
672 | format = t == JOB_START ? format_table->finished_start_job[result] : | |
673 | format_table->finished_stop_job[result]; | |
674 | if (format) | |
675 | return format; | |
676 | } | |
677 | } | |
663996b3 | 678 | |
7035cd9e | 679 | /* Return generic strings */ |
663996b3 | 680 | if (t == JOB_START) |
7035cd9e | 681 | return generic_finished_start_job[result]; |
663996b3 | 682 | else if (t == JOB_STOP || t == JOB_RESTART) |
7035cd9e MP |
683 | return generic_finished_stop_job[result]; |
684 | else if (t == JOB_RELOAD) | |
685 | return generic_finished_reload_job[result]; | |
686 | else if (t == JOB_VERIFY_ACTIVE) | |
687 | return generic_finished_verify_active_job[result]; | |
663996b3 MS |
688 | |
689 | return NULL; | |
690 | } | |
691 | ||
7035cd9e | 692 | static void job_print_status_message(Unit *u, JobType t, JobResult result) { |
7035cd9e | 693 | static const char* const job_result_status_table[_JOB_RESULT_MAX] = { |
6300502b MP |
694 | [JOB_DONE] = ANSI_GREEN " OK " ANSI_NORMAL, |
695 | [JOB_TIMEOUT] = ANSI_HIGHLIGHT_RED " TIME " ANSI_NORMAL, | |
696 | [JOB_FAILED] = ANSI_HIGHLIGHT_RED "FAILED" ANSI_NORMAL, | |
697 | [JOB_DEPENDENCY] = ANSI_HIGHLIGHT_YELLOW "DEPEND" ANSI_NORMAL, | |
698 | [JOB_SKIPPED] = ANSI_HIGHLIGHT " INFO " ANSI_NORMAL, | |
699 | [JOB_ASSERT] = ANSI_HIGHLIGHT_YELLOW "ASSERT" ANSI_NORMAL, | |
700 | [JOB_UNSUPPORTED] = ANSI_HIGHLIGHT_YELLOW "UNSUPP" ANSI_NORMAL, | |
7035cd9e | 701 | }; |
663996b3 | 702 | |
db2df898 MP |
703 | const char *format; |
704 | ||
663996b3 MS |
705 | assert(u); |
706 | assert(t >= 0); | |
707 | assert(t < _JOB_TYPE_MAX); | |
708 | ||
db2df898 MP |
709 | /* Reload status messages have traditionally not been printed to console. */ |
710 | if (t == JOB_RELOAD) | |
711 | return; | |
712 | ||
663996b3 | 713 | format = job_get_status_message_format(u, t, result); |
7035cd9e MP |
714 | if (!format) |
715 | return; | |
663996b3 | 716 | |
7035cd9e MP |
717 | if (result != JOB_DONE) |
718 | manager_flip_auto_status(u->manager, true); | |
663996b3 | 719 | |
60f067b4 | 720 | DISABLE_WARNING_FORMAT_NONLITERAL; |
7035cd9e MP |
721 | unit_status_printf(u, job_result_status_table[result], format); |
722 | REENABLE_WARNING; | |
60f067b4 | 723 | |
7035cd9e | 724 | if (t == JOB_START && result == JOB_FAILED) { |
db2df898 | 725 | _cleanup_free_ char *quoted; |
663996b3 | 726 | |
db2df898 MP |
727 | quoted = shell_maybe_quote(u->id); |
728 | manager_status_printf(u->manager, STATUS_TYPE_NORMAL, NULL, "See 'systemctl status %s' for details.", strna(quoted)); | |
663996b3 MS |
729 | } |
730 | } | |
731 | ||
663996b3 MS |
732 | static void job_log_status_message(Unit *u, JobType t, JobResult result) { |
733 | const char *format; | |
734 | char buf[LINE_MAX]; | |
7035cd9e MP |
735 | sd_id128_t mid; |
736 | static const int job_result_log_level[_JOB_RESULT_MAX] = { | |
737 | [JOB_DONE] = LOG_INFO, | |
738 | [JOB_CANCELED] = LOG_INFO, | |
739 | [JOB_TIMEOUT] = LOG_ERR, | |
740 | [JOB_FAILED] = LOG_ERR, | |
741 | [JOB_DEPENDENCY] = LOG_WARNING, | |
742 | [JOB_SKIPPED] = LOG_NOTICE, | |
743 | [JOB_INVALID] = LOG_INFO, | |
744 | [JOB_ASSERT] = LOG_WARNING, | |
745 | [JOB_UNSUPPORTED] = LOG_WARNING, | |
746 | }; | |
663996b3 MS |
747 | |
748 | assert(u); | |
749 | assert(t >= 0); | |
750 | assert(t < _JOB_TYPE_MAX); | |
751 | ||
752 | /* Skip this if it goes to the console. since we already print | |
753 | * to the console anyway... */ | |
754 | ||
755 | if (log_on_console()) | |
756 | return; | |
757 | ||
7035cd9e | 758 | format = job_get_status_message_format(u, t, result); |
663996b3 MS |
759 | if (!format) |
760 | return; | |
761 | ||
60f067b4 | 762 | DISABLE_WARNING_FORMAT_NONLITERAL; |
4c89c718 | 763 | xsprintf(buf, format, unit_description(u)); |
60f067b4 | 764 | REENABLE_WARNING; |
663996b3 | 765 | |
db2df898 MP |
766 | switch (t) { |
767 | ||
768 | case JOB_START: | |
663996b3 | 769 | mid = result == JOB_DONE ? SD_MESSAGE_UNIT_STARTED : SD_MESSAGE_UNIT_FAILED; |
db2df898 MP |
770 | break; |
771 | ||
772 | case JOB_RELOAD: | |
7035cd9e | 773 | mid = SD_MESSAGE_UNIT_RELOADED; |
db2df898 MP |
774 | break; |
775 | ||
776 | case JOB_STOP: | |
777 | case JOB_RESTART: | |
778 | mid = SD_MESSAGE_UNIT_STOPPED; | |
779 | break; | |
780 | ||
781 | default: | |
7035cd9e | 782 | log_struct(job_result_log_level[result], |
e3bff60a MP |
783 | LOG_UNIT_ID(u), |
784 | LOG_MESSAGE("%s", buf), | |
785 | "RESULT=%s", job_result_to_string(result), | |
786 | NULL); | |
7035cd9e MP |
787 | return; |
788 | } | |
663996b3 | 789 | |
7035cd9e MP |
790 | log_struct(job_result_log_level[result], |
791 | LOG_MESSAGE_ID(mid), | |
792 | LOG_UNIT_ID(u), | |
793 | LOG_MESSAGE("%s", buf), | |
794 | "RESULT=%s", job_result_to_string(result), | |
795 | NULL); | |
796 | } | |
663996b3 | 797 | |
7035cd9e MP |
798 | static void job_emit_status_message(Unit *u, JobType t, JobResult result) { |
799 | ||
800 | /* No message if the job did not actually do anything due to failed condition. */ | |
801 | if (t == JOB_START && result == JOB_DONE && !u->condition_result) | |
802 | return; | |
803 | ||
804 | job_log_status_message(u, t, result); | |
db2df898 | 805 | job_print_status_message(u, t, result); |
e3bff60a MP |
806 | } |
807 | ||
808 | static void job_fail_dependencies(Unit *u, UnitDependency d) { | |
809 | Unit *other; | |
810 | Iterator i; | |
811 | ||
812 | assert(u); | |
813 | ||
814 | SET_FOREACH(other, u->dependencies[d], i) { | |
815 | Job *j = other->job; | |
816 | ||
817 | if (!j) | |
818 | continue; | |
819 | if (!IN_SET(j->type, JOB_START, JOB_VERIFY_ACTIVE)) | |
820 | continue; | |
821 | ||
822 | job_finish_and_invalidate(j, JOB_DEPENDENCY, true); | |
823 | } | |
663996b3 | 824 | } |
663996b3 MS |
825 | |
826 | int job_finish_and_invalidate(Job *j, JobResult result, bool recursive) { | |
827 | Unit *u; | |
828 | Unit *other; | |
829 | JobType t; | |
830 | Iterator i; | |
831 | ||
832 | assert(j); | |
833 | assert(j->installed); | |
834 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); | |
835 | ||
836 | u = j->unit; | |
837 | t = j->type; | |
838 | ||
839 | j->result = result; | |
840 | ||
e3bff60a | 841 | log_unit_debug(u, "Job %s/%s finished, result=%s", u->id, job_type_to_string(t), job_result_to_string(result)); |
663996b3 | 842 | |
7035cd9e | 843 | job_emit_status_message(u, t, result); |
663996b3 MS |
844 | |
845 | job_add_to_dbus_queue(j); | |
846 | ||
847 | /* Patch restart jobs so that they become normal start jobs */ | |
848 | if (result == JOB_DONE && t == JOB_RESTART) { | |
849 | ||
850 | job_change_type(j, JOB_START); | |
e735f4d4 | 851 | job_set_state(j, JOB_WAITING); |
663996b3 MS |
852 | |
853 | job_add_to_run_queue(j); | |
854 | ||
855 | goto finish; | |
856 | } | |
857 | ||
60f067b4 | 858 | if (result == JOB_FAILED || result == JOB_INVALID) |
663996b3 MS |
859 | j->manager->n_failed_jobs ++; |
860 | ||
861 | job_uninstall(j); | |
862 | job_free(j); | |
863 | ||
864 | /* Fail depending jobs on failure */ | |
865 | if (result != JOB_DONE && recursive) { | |
e3bff60a MP |
866 | if (IN_SET(t, JOB_START, JOB_VERIFY_ACTIVE)) { |
867 | job_fail_dependencies(u, UNIT_REQUIRED_BY); | |
868 | job_fail_dependencies(u, UNIT_REQUISITE_OF); | |
869 | job_fail_dependencies(u, UNIT_BOUND_BY); | |
e3bff60a MP |
870 | } else if (t == JOB_STOP) |
871 | job_fail_dependencies(u, UNIT_CONFLICTED_BY); | |
663996b3 MS |
872 | } |
873 | ||
874 | /* Trigger OnFailure dependencies that are not generated by | |
875 | * the unit itself. We don't treat JOB_CANCELED as failure in | |
876 | * this context. And JOB_FAILURE is already handled by the | |
877 | * unit itself. */ | |
878 | if (result == JOB_TIMEOUT || result == JOB_DEPENDENCY) { | |
e3bff60a MP |
879 | log_struct(LOG_NOTICE, |
880 | "JOB_TYPE=%s", job_type_to_string(t), | |
881 | "JOB_RESULT=%s", job_result_to_string(result), | |
882 | LOG_UNIT_ID(u), | |
883 | LOG_UNIT_MESSAGE(u, "Job %s/%s failed with result '%s'.", | |
f47781d8 MP |
884 | u->id, |
885 | job_type_to_string(t), | |
886 | job_result_to_string(result)), | |
e3bff60a | 887 | NULL); |
663996b3 MS |
888 | |
889 | unit_start_on_failure(u); | |
890 | } | |
891 | ||
892 | unit_trigger_notify(u); | |
893 | ||
894 | finish: | |
895 | /* Try to start the next jobs that can be started */ | |
896 | SET_FOREACH(other, u->dependencies[UNIT_AFTER], i) | |
897 | if (other->job) | |
898 | job_add_to_run_queue(other->job); | |
899 | SET_FOREACH(other, u->dependencies[UNIT_BEFORE], i) | |
900 | if (other->job) | |
901 | job_add_to_run_queue(other->job); | |
902 | ||
903 | manager_check_finished(u->manager); | |
904 | ||
905 | return 0; | |
906 | } | |
907 | ||
60f067b4 JS |
908 | static int job_dispatch_timer(sd_event_source *s, uint64_t monotonic, void *userdata) { |
909 | Job *j = userdata; | |
5eef597e | 910 | Unit *u; |
663996b3 | 911 | |
60f067b4 JS |
912 | assert(j); |
913 | assert(s == j->timer_event_source); | |
663996b3 | 914 | |
e3bff60a | 915 | log_unit_warning(j->unit, "Job %s/%s timed out.", j->unit->id, job_type_to_string(j->type)); |
663996b3 | 916 | |
5eef597e | 917 | u = j->unit; |
60f067b4 | 918 | job_finish_and_invalidate(j, JOB_TIMEOUT, true); |
5eef597e MP |
919 | |
920 | failure_action(u->manager, u->job_timeout_action, u->job_timeout_reboot_arg); | |
921 | ||
60f067b4 JS |
922 | return 0; |
923 | } | |
663996b3 | 924 | |
60f067b4 JS |
925 | int job_start_timer(Job *j) { |
926 | int r; | |
663996b3 | 927 | |
60f067b4 JS |
928 | if (j->timer_event_source) |
929 | return 0; | |
663996b3 | 930 | |
60f067b4 | 931 | j->begin_usec = now(CLOCK_MONOTONIC); |
663996b3 | 932 | |
4c89c718 | 933 | if (j->unit->job_timeout == USEC_INFINITY) |
60f067b4 | 934 | return 0; |
663996b3 | 935 | |
60f067b4 JS |
936 | r = sd_event_add_time( |
937 | j->manager->event, | |
938 | &j->timer_event_source, | |
939 | CLOCK_MONOTONIC, | |
4c89c718 | 940 | usec_add(j->begin_usec, j->unit->job_timeout), 0, |
60f067b4 JS |
941 | job_dispatch_timer, j); |
942 | if (r < 0) | |
943 | return r; | |
663996b3 | 944 | |
e3bff60a MP |
945 | (void) sd_event_source_set_description(j->timer_event_source, "job-start"); |
946 | ||
60f067b4 | 947 | return 0; |
663996b3 MS |
948 | } |
949 | ||
950 | void job_add_to_run_queue(Job *j) { | |
951 | assert(j); | |
952 | assert(j->installed); | |
953 | ||
954 | if (j->in_run_queue) | |
955 | return; | |
956 | ||
60f067b4 JS |
957 | if (!j->manager->run_queue) |
958 | sd_event_source_set_enabled(j->manager->run_queue_event_source, SD_EVENT_ONESHOT); | |
959 | ||
960 | LIST_PREPEND(run_queue, j->manager->run_queue, j); | |
663996b3 MS |
961 | j->in_run_queue = true; |
962 | } | |
963 | ||
964 | void job_add_to_dbus_queue(Job *j) { | |
965 | assert(j); | |
966 | assert(j->installed); | |
967 | ||
968 | if (j->in_dbus_queue) | |
969 | return; | |
970 | ||
971 | /* We don't check if anybody is subscribed here, since this | |
972 | * job might just have been created and not yet assigned to a | |
973 | * connection/client. */ | |
974 | ||
60f067b4 | 975 | LIST_PREPEND(dbus_queue, j->manager->dbus_job_queue, j); |
663996b3 MS |
976 | j->in_dbus_queue = true; |
977 | } | |
978 | ||
979 | char *job_dbus_path(Job *j) { | |
980 | char *p; | |
981 | ||
982 | assert(j); | |
983 | ||
60f067b4 | 984 | if (asprintf(&p, "/org/freedesktop/systemd1/job/%"PRIu32, j->id) < 0) |
663996b3 MS |
985 | return NULL; |
986 | ||
987 | return p; | |
988 | } | |
989 | ||
663996b3 MS |
990 | int job_serialize(Job *j, FILE *f, FDSet *fds) { |
991 | fprintf(f, "job-id=%u\n", j->id); | |
992 | fprintf(f, "job-type=%s\n", job_type_to_string(j->type)); | |
993 | fprintf(f, "job-state=%s\n", job_state_to_string(j->state)); | |
663996b3 MS |
994 | fprintf(f, "job-irreversible=%s\n", yes_no(j->irreversible)); |
995 | fprintf(f, "job-sent-dbus-new-signal=%s\n", yes_no(j->sent_dbus_new_signal)); | |
996 | fprintf(f, "job-ignore-order=%s\n", yes_no(j->ignore_order)); | |
60f067b4 JS |
997 | |
998 | if (j->begin_usec > 0) | |
999 | fprintf(f, "job-begin="USEC_FMT"\n", j->begin_usec); | |
1000 | ||
5eef597e | 1001 | bus_track_serialize(j->clients, f); |
663996b3 MS |
1002 | |
1003 | /* End marker */ | |
1004 | fputc('\n', f); | |
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | int job_deserialize(Job *j, FILE *f, FDSet *fds) { | |
60f067b4 JS |
1009 | assert(j); |
1010 | ||
663996b3 MS |
1011 | for (;;) { |
1012 | char line[LINE_MAX], *l, *v; | |
1013 | size_t k; | |
1014 | ||
1015 | if (!fgets(line, sizeof(line), f)) { | |
1016 | if (feof(f)) | |
1017 | return 0; | |
1018 | return -errno; | |
1019 | } | |
1020 | ||
1021 | char_array_0(line); | |
1022 | l = strstrip(line); | |
1023 | ||
1024 | /* End marker */ | |
1025 | if (l[0] == 0) | |
1026 | return 0; | |
1027 | ||
1028 | k = strcspn(l, "="); | |
1029 | ||
1030 | if (l[k] == '=') { | |
1031 | l[k] = 0; | |
1032 | v = l+k+1; | |
1033 | } else | |
1034 | v = l+k; | |
1035 | ||
1036 | if (streq(l, "job-id")) { | |
60f067b4 | 1037 | |
663996b3 MS |
1038 | if (safe_atou32(v, &j->id) < 0) |
1039 | log_debug("Failed to parse job id value %s", v); | |
60f067b4 | 1040 | |
663996b3 | 1041 | } else if (streq(l, "job-type")) { |
60f067b4 JS |
1042 | JobType t; |
1043 | ||
1044 | t = job_type_from_string(v); | |
663996b3 MS |
1045 | if (t < 0) |
1046 | log_debug("Failed to parse job type %s", v); | |
1047 | else if (t >= _JOB_TYPE_MAX_IN_TRANSACTION) | |
1048 | log_debug("Cannot deserialize job of type %s", v); | |
1049 | else | |
1050 | j->type = t; | |
60f067b4 | 1051 | |
663996b3 | 1052 | } else if (streq(l, "job-state")) { |
60f067b4 JS |
1053 | JobState s; |
1054 | ||
1055 | s = job_state_from_string(v); | |
663996b3 MS |
1056 | if (s < 0) |
1057 | log_debug("Failed to parse job state %s", v); | |
1058 | else | |
e735f4d4 | 1059 | job_set_state(j, s); |
60f067b4 | 1060 | |
663996b3 | 1061 | } else if (streq(l, "job-irreversible")) { |
60f067b4 JS |
1062 | int b; |
1063 | ||
1064 | b = parse_boolean(v); | |
663996b3 MS |
1065 | if (b < 0) |
1066 | log_debug("Failed to parse job irreversible flag %s", v); | |
1067 | else | |
1068 | j->irreversible = j->irreversible || b; | |
60f067b4 | 1069 | |
663996b3 | 1070 | } else if (streq(l, "job-sent-dbus-new-signal")) { |
60f067b4 JS |
1071 | int b; |
1072 | ||
1073 | b = parse_boolean(v); | |
663996b3 MS |
1074 | if (b < 0) |
1075 | log_debug("Failed to parse job sent_dbus_new_signal flag %s", v); | |
1076 | else | |
1077 | j->sent_dbus_new_signal = j->sent_dbus_new_signal || b; | |
60f067b4 | 1078 | |
663996b3 | 1079 | } else if (streq(l, "job-ignore-order")) { |
60f067b4 JS |
1080 | int b; |
1081 | ||
1082 | b = parse_boolean(v); | |
663996b3 MS |
1083 | if (b < 0) |
1084 | log_debug("Failed to parse job ignore_order flag %s", v); | |
1085 | else | |
1086 | j->ignore_order = j->ignore_order || b; | |
60f067b4 JS |
1087 | |
1088 | } else if (streq(l, "job-begin")) { | |
1089 | unsigned long long ull; | |
1090 | ||
1091 | if (sscanf(v, "%llu", &ull) != 1) | |
1092 | log_debug("Failed to parse job-begin value %s", v); | |
663996b3 | 1093 | else |
60f067b4 JS |
1094 | j->begin_usec = ull; |
1095 | ||
1096 | } else if (streq(l, "subscribed")) { | |
1097 | ||
5eef597e | 1098 | if (strv_extend(&j->deserialized_clients, v) < 0) |
60f067b4 | 1099 | return log_oom(); |
663996b3 MS |
1100 | } |
1101 | } | |
1102 | } | |
1103 | ||
1104 | int job_coldplug(Job *j) { | |
60f067b4 | 1105 | int r; |
663996b3 | 1106 | |
60f067b4 JS |
1107 | assert(j); |
1108 | ||
1109 | /* After deserialization is complete and the bus connection | |
1110 | * set up again, let's start watching our subscribers again */ | |
5eef597e | 1111 | r = bus_track_coldplug(j->manager, &j->clients, &j->deserialized_clients); |
60f067b4 JS |
1112 | if (r < 0) |
1113 | return r; | |
1114 | ||
1115 | if (j->state == JOB_WAITING) | |
1116 | job_add_to_run_queue(j); | |
1117 | ||
4c89c718 | 1118 | if (j->begin_usec == 0 || j->unit->job_timeout == USEC_INFINITY) |
663996b3 MS |
1119 | return 0; |
1120 | ||
4c89c718 | 1121 | j->timer_event_source = sd_event_source_unref(j->timer_event_source); |
663996b3 | 1122 | |
60f067b4 JS |
1123 | r = sd_event_add_time( |
1124 | j->manager->event, | |
1125 | &j->timer_event_source, | |
1126 | CLOCK_MONOTONIC, | |
4c89c718 | 1127 | usec_add(j->begin_usec, j->unit->job_timeout), 0, |
60f067b4 JS |
1128 | job_dispatch_timer, j); |
1129 | if (r < 0) | |
f47781d8 | 1130 | log_debug_errno(r, "Failed to restart timeout for job: %m"); |
60f067b4 | 1131 | |
e3bff60a MP |
1132 | (void) sd_event_source_set_description(j->timer_event_source, "job-timeout"); |
1133 | ||
60f067b4 | 1134 | return r; |
663996b3 MS |
1135 | } |
1136 | ||
1137 | void job_shutdown_magic(Job *j) { | |
1138 | assert(j); | |
1139 | ||
1140 | /* The shutdown target gets some special treatment here: we | |
1141 | * tell the kernel to begin with flushing its disk caches, to | |
1142 | * optimize shutdown time a bit. Ideally we wouldn't hardcode | |
1143 | * this magic into PID 1. However all other processes aren't | |
1144 | * options either since they'd exit much sooner than PID 1 and | |
1145 | * asynchronous sync() would cause their exit to be | |
1146 | * delayed. */ | |
1147 | ||
14228c0d | 1148 | if (j->type != JOB_START) |
663996b3 MS |
1149 | return; |
1150 | ||
e3bff60a | 1151 | if (j->unit->manager->running_as != MANAGER_SYSTEM) |
14228c0d MB |
1152 | return; |
1153 | ||
1154 | if (!unit_has_name(j->unit, SPECIAL_SHUTDOWN_TARGET)) | |
663996b3 MS |
1155 | return; |
1156 | ||
60f067b4 JS |
1157 | /* In case messages on console has been disabled on boot */ |
1158 | j->unit->manager->no_console_output = false; | |
1159 | ||
6300502b | 1160 | if (detect_container() > 0) |
663996b3 MS |
1161 | return; |
1162 | ||
1163 | asynchronous_sync(); | |
1164 | } | |
1165 | ||
4c89c718 MP |
1166 | int job_get_timeout(Job *j, usec_t *timeout) { |
1167 | usec_t x = USEC_INFINITY, y = USEC_INFINITY; | |
60f067b4 | 1168 | Unit *u = j->unit; |
4c89c718 | 1169 | int r; |
60f067b4 JS |
1170 | |
1171 | assert(u); | |
1172 | ||
1173 | if (j->timer_event_source) { | |
1174 | r = sd_event_source_get_time(j->timer_event_source, &x); | |
1175 | if (r < 0) | |
1176 | return r; | |
60f067b4 JS |
1177 | } |
1178 | ||
1179 | if (UNIT_VTABLE(u)->get_timeout) { | |
4c89c718 MP |
1180 | r = UNIT_VTABLE(u)->get_timeout(u, &y); |
1181 | if (r < 0) | |
1182 | return r; | |
60f067b4 JS |
1183 | } |
1184 | ||
4c89c718 | 1185 | if (x == USEC_INFINITY && y == USEC_INFINITY) |
60f067b4 JS |
1186 | return 0; |
1187 | ||
1188 | *timeout = MIN(x, y); | |
60f067b4 JS |
1189 | return 1; |
1190 | } | |
1191 | ||
663996b3 MS |
1192 | static const char* const job_state_table[_JOB_STATE_MAX] = { |
1193 | [JOB_WAITING] = "waiting", | |
1194 | [JOB_RUNNING] = "running" | |
1195 | }; | |
1196 | ||
1197 | DEFINE_STRING_TABLE_LOOKUP(job_state, JobState); | |
1198 | ||
1199 | static const char* const job_type_table[_JOB_TYPE_MAX] = { | |
1200 | [JOB_START] = "start", | |
1201 | [JOB_VERIFY_ACTIVE] = "verify-active", | |
1202 | [JOB_STOP] = "stop", | |
1203 | [JOB_RELOAD] = "reload", | |
1204 | [JOB_RELOAD_OR_START] = "reload-or-start", | |
1205 | [JOB_RESTART] = "restart", | |
1206 | [JOB_TRY_RESTART] = "try-restart", | |
4c89c718 | 1207 | [JOB_TRY_RELOAD] = "try-reload", |
663996b3 MS |
1208 | [JOB_NOP] = "nop", |
1209 | }; | |
1210 | ||
1211 | DEFINE_STRING_TABLE_LOOKUP(job_type, JobType); | |
1212 | ||
1213 | static const char* const job_mode_table[_JOB_MODE_MAX] = { | |
1214 | [JOB_FAIL] = "fail", | |
1215 | [JOB_REPLACE] = "replace", | |
1216 | [JOB_REPLACE_IRREVERSIBLY] = "replace-irreversibly", | |
1217 | [JOB_ISOLATE] = "isolate", | |
60f067b4 | 1218 | [JOB_FLUSH] = "flush", |
663996b3 | 1219 | [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies", |
60f067b4 | 1220 | [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements", |
663996b3 MS |
1221 | }; |
1222 | ||
1223 | DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode); | |
1224 | ||
1225 | static const char* const job_result_table[_JOB_RESULT_MAX] = { | |
1226 | [JOB_DONE] = "done", | |
1227 | [JOB_CANCELED] = "canceled", | |
1228 | [JOB_TIMEOUT] = "timeout", | |
1229 | [JOB_FAILED] = "failed", | |
1230 | [JOB_DEPENDENCY] = "dependency", | |
60f067b4 JS |
1231 | [JOB_SKIPPED] = "skipped", |
1232 | [JOB_INVALID] = "invalid", | |
f47781d8 | 1233 | [JOB_ASSERT] = "assert", |
e735f4d4 | 1234 | [JOB_UNSUPPORTED] = "unsupported", |
663996b3 MS |
1235 | }; |
1236 | ||
1237 | DEFINE_STRING_TABLE_LOOKUP(job_result, JobResult); | |
4c89c718 MP |
1238 | |
1239 | const char* job_type_to_access_method(JobType t) { | |
1240 | assert(t >= 0); | |
1241 | assert(t < _JOB_TYPE_MAX); | |
1242 | ||
1243 | if (IN_SET(t, JOB_START, JOB_RESTART, JOB_TRY_RESTART)) | |
1244 | return "start"; | |
1245 | else if (t == JOB_STOP) | |
1246 | return "stop"; | |
1247 | else | |
1248 | return "reload"; | |
1249 | } |